Repairing device for steam-hammers.



c. T. su'mm. REPAIRING DEVICE FOR STEAM HAMMERS. APPLICATION mm :m. 30. 1911,

NI ED STATES TPATW -I FFKQ CHARLES a. swarm, 'oFwHITmsVILLE, MAss'AonusETTs; "Asslen'on o'r ONE-Hens To all whom) it may concern:

Be it known that I, CHARLES T. BURLIN, a citizen of the United States, residingat Whitinsville, in the county of Worcester and State of Massachusetts, have invented anew and useful Repairing Devicefor Steam- Hammers, of which the following is a specification. .1 f

' This invention relates :to a devi'ce'for use in'removing the end of a broken piston rod from a steam'hammer and to themethod.

The principal objects of the invention are to rovide means whereby this rod can be quic ly and absolutely removed no matter how hard it sticks; and to provide a coin struction for that purpose which will in volve few parts and can be put inplace readily without material loss of time; and also to provide one which will fit hammers of difierent sizes. Further objects and advantages of the invention will appear heree inafter; r r Referenceis to be had to the accompanying drawings, in which Figure 1 is an end elevation of a steam hammer showing the piston rod broken in the usual manner; a r 1 Fig; 2 i a similar view of the hammer showing a preferredembodiment of this invention applied thereto, the hammerbeing raised; a Fig. 3 isasectional VlGW on the line 33 of Flg. 2, showing an additional feature of Y the invention;

--Fig. 4* is a similar-section of thejjsame with the hammerdown' and thefparts all ready to commence the loosening eperation,

.. ;Fig.'5 is a plan showing thepistbn rod p section.

Thi invention is intended-to be used; in connection with steam hammers whichwei-gh anywhere from a few hundred pounds up tofouror five tons. The piston rods which operate these hammers frequently become broken, and'so far as I am aware they lways break near the top of the hammer so that there is no material amount of-rod projecting. Ifrom the-l1amme and no convenient Way/of getting them-out. It is customary to .jack up the lhammer, take out the die, place a pm in a holethat runs upthrough thehammer, and then lower the hammer on hi p r e P r e;-Q 9e1 P E-..the weight of the hammer" to force the piston 1 Specification of Lett ers Patent.

To WILSON L". GOODRICH, or 'SPBINGEIELD;MASSiQCHUSETTS; j surname Device roe STEAM-HAMMERS; i

atentea 1, 1913;

Application filed March 30,1917. se ia 110.158,?63. v

end out atlthe top. Although the object is not always accomplished, yet it is altime consuming operation and puts the hammer out of business, for several hours and sometimes longer because the hammer sometimes has to be taken .outand the pinrbored out in another machine, Thisinvention-is designed to avoid'allthis delay and thehard work re quired in -jaoking upthe hammer inthis manner,.and is designeduespecially to take the hammer. i

The invention isshown as appliedto an ordinary form of steam hammer comprising the hammer 10, steam cylinder 11 and piston rod'12. The hammer, of course, is provided-,with the-usual die. 13 held'in by a key 14, and is also provided with aperforation15 advantage of the: steam cylinder-for raising extending upwardly therethrough in Which the endof the piston rod is driven tohold and operate the hammer therefrom";- In the drawings the endjof the piston rod is shown broken ofi? in .a posit-ion where it-usually breaks. I v

VVhG I the piston rod breaks the, weightof the-hammer is relievedifrom. it obviously and the cylinder acts to draw the' piston rod up to its highestlimit, andthen a safety device, which is ordinarily used. in. this-type of hammer but is 'not shown herein, acts to push the" piston down nearlyinto Contact with the top of-the hammerq .Thesefeatures are 01d and ordinarilyemployed; ,When th'isaccident happensithe parts are left in that,,-posii t and-th ythefirst thi s ,n s y' n order to perform the necessary repairs is to operate the piston to move it, upwardly out (if-contact with-the hammer. {According-.to the present; pe o s de idedly h ng d-5 T e yz e s re ed a lu u and the i 3 hu le t loose so thatfit can drop out whenthehammer isj raised-;andremain on the block-if invention: the

desiredr. After, the piston israised If introduce between the pist on and top .of the cylinder a yoke 20. This is provided with a perforation 21 therethroughwhich I-pr efe'r t ma ea ut x i h il d m te w st nds n. t e slotsbetn en;th alegsan lse' cured in proper position by nuts 24; with iio which they are provided. These are ad'- justed to the proper place so that the eyebolts come close to the sidesof the hammer j and so that theeyes thereof come in alinement with a pair of holes 25 in the sides of the hammer. These holes..may'- extend clear across so as to form a continuous passage if; desired. -Then;.;pins,;26 are introduced through the eyes of theeye-boltsinto these holes to hold the parts in position and sup-' port the yoke 20 considerably above the top of the hammerso that there is a space thereunder. I

The .piston rod is now brought down through the hole 21 and a collar 27 fastened to it on the undersideof the yoke.- This can be secured'by set screw or the like. Then a plate 28 is laid on top ofcthe hammerunder the piston rod and, the steam is admitted into the cylinder todraw the device up. 7

The key lthaving been removed the die 13 will be-lft on the block'when the ham mer ascends. This can be removed and a plain piece of iron .40-put in its place or it can be used as a basefor supporting a driving. plug 29 which constitutes part of the repair device. --This is placed in alinement with-the hole,-and,on.,top of itis placed another loosening plug 30 (if-the same diameter as the plug 2'9', namely that of the smallest-piston rod in use in this class of hammers. The-plug130 is selected "of such height as tomake the combined lengths of the plugs 29'and '30 almostequalto the height of the hammer. I prefer to have twoof these. plugsflinste'ad-of making them all in one, because the lower one 29' can be furnished by" the manufacturer of the device suitable ;for-all hammersor preferably of such sizeandlength as to serve for the smallest oneand then the user caniurnish a set of plugs'-30,one-for each-size of'hammer that he has. Therplug-29 is provided with a fra1ne31 connected by" chains-32 'with springs'33-and impair-10f hooksf34. These arelaid out-on the blockat the-present time.

The -next operation consists; in operating the cylinder soas to 1 allowthe hammer" to come down so that the plugs '29- and'30are brought up intoit; in the passage therein.

/ Thisopera tionisperformed gentlyto place position shown in Figlji.

theparts in position. Thenthe'hooks 34 are placed qover the pins 26 which project from the screw eyes V suiliciently to hold these parts in position. 1 Thepartsfare now in the New the-piston is raised and then lowered Y with --suffie ient rereato; give a hard 'blow to 'the--p1: ojecting}{end l Of the plug 129 which drives theplug 30 npflagainst the end of-the ton rod ivhich is stiickiii the hammer varni hesplat n y n it. ItPi's-joiced out by the pres- I hammerbut it-fvvill yield 1as -the fence-denies Ygoi it son ists. th ierce i described the operation in full. In this vway the customary operation consuming hours and sometimes days is reduced to one involving only a few minutes, thus saving more than its cost" every time it is used."

It will be understood, of course, that this arrangement can be modified'inmany-ways without departing from thescope of the in-, vention as expressed in the claims. and therefore I do not wish to be limited'to all the details of construction shown, but'what I do claim is '1. In a device of the character described, the combination of means for temporarily connecting the end of a broken piston rod with a hammer head to permit-the head to be lifted by the broken ,rod, and means adaptedto projectup throughthe hammer head for loosening the broken 'endutherefrom. V

2. In a device of the character described, the combination of means for temporarily connecting'the endot a broken pistonrod with a hammerhead, means adaptedto project up through the hammer head for loosening the broken end therefrom, and means forconnecting thelast named means'with the first named. means while on the hammer.

,3. In a device of-the char'acterdescribed, the combination of a yoke-having an opening therethrough adapted to receive the. end of broken piston rod, means adaptedto be attached to the end of the piston rod under the yoke to prevent the piston rod being 4. In a device of the character described,

the combination ofa yoke having an opening therethrough adapted to'r'eceivethe end of a piston rod, means for securingthe end of the piston rod under the yoke so that the piston rod can be used to lift the same, means for connecting the yoke with the hammer head whereby they will -mov'e together, said means being arranged to hold the yoke at a' distance abovethe hammer head and furnish a space between them, and a plate located on top of the hammerhead under the end of the piston rod.

' In a device of-the character described, the combinatio of a yoke having antopen:

ing-ther-ethrough adapted to receive theend with the hammer head whereby they will move together, said screw eyes being long enough to hold the yoke at a distance above the hammer head and furnish a space between them, means for adjustably connecting said screw eyes with the yoke, and pins for connecting the screw-eyes with the hammer head. i

6. In a device of the character described, the combination of a yoke having a passage for receiving the end of a piston rod, said yoke having two pairs of legs extending in opposite directions and having spaces between them, a pair of screw-eyes adapted to be received in said spaces, means for securing said screw-eyes at any desired distance from the center of the yoke and at any desired elevation with respect thereto, and means for securing the screw-eyes to the hammer head.

7. In a device of the character described, the combination of a yoke having a passage for receiving the end of a piston rod, said yoke having two pairs of legs extending in opposite directions and having spaces between them, a pair of screw-eyes adapted to be received in said spaces, means for secur-v connecting the end of a broken piston rod with a hammer head, means adapted to project up through the hammer head for disengaging the broken end therefrom, a pair of pins for connecting said yoke with the hammer head, said pins projecting from opposite sides thereof, a loosening plug adapted to enter the bottom of the hammer, two flexible connections connected therewith, and hooks on their ends for engaging said pins to hold the loosening plug temporarily in position.

9. In a device of the character described, the combination of a yoke for temporarily connecting-the end of a. broken piston rod with a hammer head, a loosening plug adapted to enter the bottom of the hammer, two flexible connections connected therewith, and hooks on their ends for engaging said hammer to hold the loosening plug temporarily in position,

10. The method of loosening the end of a piston rod from a hammer which consists in moving the piston rod down near the top of the hammer, connecting it loosely w1th the hammer so that it will raise it when elevated,

raising the piston rod with the hammer,

placing a loosening plug below the hammer,

centrally alined therewith, lowering the piston rod and hammer over said loosening plug to insert the plug in the hammer, connecting the loosening plug temporarily with affixed my signature.

CHARLES T. BURLIN.

copies of this patent may be obtained for five cents each, by addressing the Commissioner oflatents,

Washington, D. G. 

